S. on the 16th and persisted through the 17th.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS REV wrote it up.
A broad area of upper level low pressure moved into the western part of the U.S. on the 16th and persisted through the 17th. This low brought greater forcing for showers and thunderstorms and produced a few strong storms across parts of Mineral County and the basin and range country on the 16th. The low also resulted in bands of moderate to heavy rain developing north of the main center of the low stretching across the northern Sierra and into far western Nevada on the 16th.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Reno, NV wrote its last area forecast discussion before the first event at May 15, 6:43 PM PST, 4 hours 17 minutes earlier.
Area Forecast Discussion National Weather Service Reno NV 743 PM PDT Tue May 15 2018 .UPDATE... Convective coverage has decreased this evening and the remaining cells are fairly weak. With the loss of the minimal daytime heating we saw earlier today...it is likely the convective cells will continue to decrease in intensity this evening. The low responsible for much of this activity is lifting north and that should allow for less coverage as well. Isolated to widely scattered showers are possible into the overnight hours and coverage may begin to increase again early Wednesday as another area of low pressure lifts into the region. We will update the current forecast to clean up the convective coverage in some areas shortly. && .PREVIOUS DISCUSSION... /Issued 128 PM PDT Tue May 15 2018/ SYNOPSIS... Low pressure will remain over the region this week with showers and a few thunderstorms each day. Showers and thunderstorms may produce heavy downpours with accumulating snow or small hail possible in the higher elevations on Wednesday. This weekend may feature a break in the action with warmer weather before additional showers and thunderstorms develop for the start of next week. DISCUSSION... First low will continue to spin over Pershing County today with showers and thunderstorms across much of the region. The Surprise Valley in Modoc County, Mono County and Mineral County may be the only places with little to no activity the rest of today. Another funnel cloud was reported in Grass Valley south of Winnemucca just after 11 am this morning. Additional funnel clouds are possible, though are very unlikely to touchdown in valley locations. As storms increase in intensity later today, small hail, heavy downpours and outflow winds to 40 mph are possible. Second low will move into the Sierra tomorrow morning with rain and high elevation snow developing by mid morning around the Tahoe Basin, northern Mono county and far western NV. Showers and thunderstorms will build up in the afternoon, though cloud cover may greatly limit surface based heating and instability. The low does have decent upper forcing with it, which could be enough for stronger thunderstorms to develop across Pershing, Churchill, Lyon and Mineral counties in the late afternoon and early evening. Models are producing some impressive precipitation totals (up to 1 inch) in Pershing and Churchill counties, so there could be some run off issues and perhaps ponding of water in I-80, US-50 and US-95. Low will continue to linger over central Nevada into Friday, which will keep the threat of showers and a few thunderstorms at least through the end of the week. Latest models really don't dry us out over the weekend, but do think there will be a decrease in activity with a slightly more stable westerly flow for Sunday. This should kick up some late afternoon breezes along the Sierra Front but nothing unusual for the region. Next spring system should reach northern California on Monday which is looking like another favorable day for showers and a few strong thunderstorms. Brong AVIATION... Showers and thunderstorms will persist the next few days with low pressure about the region. For the rest of today, strongest activity should remain north of KTVL-KNFL. Small hail, heavy downpours, gusty outflow winds to 35 kts are the main threats. A couple funnel clouds are not out of the question, one was reported over Virginia City yesterday and a second was reported over Grass Valley south of KWMC this morning. A new low will move into the Sierra Wednesday morning and will lower freezing levels below 9000 feet, perhaps as low as 7500-8000 feet. Rain and some snow should develop over the Sierra and far western Nevada by mid morning with MVFR ceilings. Brief period of IFR conditions is not out of the question if rain becomes heavy at KTRK and KTVL. A few strong storms are possible across Pershing, Churchill and Mineral counties after 21z Wednesday, heavy rain, hail and outflows to 40 kts are possible. Brong && .REV Watches/Warnings/Advisories... NV...None. CA...None. && For more information from the National Weather Service visit... http://weather.gov/reno
The national radar mosaic for the moment the first event began.
10 heavy rain. Local standard time, as filed.
CO-OP observer station CSVN2, Cold Springs Valley reported 1.16 inches of rainfall within a 24-hour period from 15 May 2300PST to 16 May 2300PST.
Mesonet station ALMN2, 5 miles southwest of Reno (elevation 6160 feet) reported 1.11 inches of rainfall in a 24-hour period from 16 May 0130PST to 17 May 0130PST.
NWS WFO Reno (elevation 4987 feet) observed 0.53 inches of rainfall in a 24-hour period from 16 May 0400PST to 17 May 0400PST.
CoCoRaHS station NV-WH-79, 7 miles east of Hallelujah Junction reported 0.84 inches of rainfall in a 24-hour period from 16 May 0600PST to 15 May 0600PST.
Mesonet station MRSN2, Mount Rose Summit (elevation 8799 feet) reported 0.80 inches of rainfall in an 8-hour period from 16 May 0600PST to 1400PST.
CoCoRaHS station NV-LY-31, 8 miles southeast of Mason reported 0.69 inches of rainfall in a 24-hour period from 16 May 0600PST to 17 May 0600PST.
CoCoRaHS station NV-CC-14, 3 miles north-northeast of Carson City reported 0.53 inches of rainfall in a 24-hour period from 16 May 0600PST to 17 May 0600PST.
Mesonet station D4148, 3 miles north of Spanish Springs (elevation 4495 feet) reported 0.83 inches of rainfall in a 24-hour period from 16 May 0650PST to 17 May 0650PST.
Mesonet station GALN2, 4 miles north-northwest of Washoe City (elevation 5610 feet) reported 0.71 inches of rainfall in an 8-hour period from 16 May 0650PST to 1450PST.
ASOS station NFL, Fallon Naval Air Station (elevation 3934 feet) reported 0.52 inches of rainfall from 16 May 1341PST to 1856PST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2018Every state in 2018This day in weather historyWarnings in Nevada, May 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 759134, 759139, 762277, 759152, 762106, 762108, 762113, 759157, 762107, 762111.